Coeliac disease is an autoimmune condition where eating gluten, a protein found in wheat, rye, barley and some oats, causes the body to attack the lining of the small intestine. It’s thought to affect around 1 in 70 Australians, yet a large number of people with the condition remain undiagnosed for years. Understanding the early signs, how doctors test for it, and what a gluten-free life actually involves can make a real difference to your long-term health.
This article is general health information only and isn’t a substitute for personal medical advice. If you’re ever experiencing a severe reaction, difficulty breathing, or any medical emergency, call 000 or head to your nearest emergency department immediately.
What Is Coeliac Disease?
Coeliac disease isn’t a food intolerance. It’s an autoimmune disease, meaning the immune system mistakenly treats gluten as a threat and damages healthy tissue in response.
In someone with coeliac disease, eating gluten triggers inflammation that flattens the tiny finger-like structures (villi) lining the small intestine. These villi help absorb nutrients, so when they’re damaged, the body struggles to take in vitamins, minerals and energy properly.
The exact cause isn’t fully understood, but genetics play a strong role and it often runs in families. You can read more through healthdirect’s overview of coeliac disease, a reliable, government-backed resource.
Signs and Symptoms to Watch For
Symptoms of coeliac disease vary a lot from person to person, and some people have very few noticeable signs at all. That’s part of why it can be tricky to pick up without proper testing.
- Ongoing bloating, gas or abdominal pain
- Diarrhoea, constipation, or alternating between the two
- Persistent tiredness or low energy, even after rest
- Unexplained weight loss
- Nausea or feeling unwell after eating
- Anaemia (low iron) that doesn’t improve with supplements
- Headaches or brain fog
- An itchy skin rash, sometimes with small blisters
- Bone or joint pain
- In children, slower growth or delayed puberty
These symptoms overlap with many other conditions, so it’s easy to dismiss them. If several sound familiar and have lasted a while, it’s worth flagging with your GP rather than guessing.
How Coeliac Disease Is Diagnosed
Getting an accurate diagnosis usually starts with a GP visit, who can arrange blood tests looking for particular antibodies linked to coeliac disease.
Keep Eating Gluten Before Testing
An important point that trips people up: you need to keep eating gluten in the lead-up to testing. Cutting it out early can skew results, so discuss timing with your doctor before changing your diet.
Specialist Referral and Biopsy
If blood tests suggest coeliac disease, your GP will typically provide a specialist referral to a gastroenterologist, often followed by a small procedure called an endoscopy, where a tiny sample of the small intestine lining is examined.
Medicare rebates generally apply to eligible blood tests and specialist appointments, and some GP visits may be bulk billed. For current details on rebates and eligibility, check Services Australia’s Medicare information directly, since figures can change.
Treatment and Living Gluten-Free
There’s currently no cure for coeliac disease, and no medication that lets you eat gluten safely. The only recognised treatment is a strict, lifelong gluten-free diet.
That means avoiding wheat, rye, barley and regular oats, and the everyday products containing them, from bread and pasta to sauces and beer. It takes adjustment, but most people find it becomes second nature.
A referral to an accredited dietitian, an allied health professional, can help you build a balanced gluten-free diet and spot hidden sources of gluten. Groups like Coeliac Australia offer practical food lists and label-reading guides for Australian products.
Some people with confirmed coeliac disease may be eligible for PBS-subsidised items, though eligibility varies, so it’s worth asking your GP or dietitian what applies to you rather than relying on general figures.
What Happens If Coeliac Disease Is Left Untreated
Ignoring symptoms or staying on a gluten-containing diet after diagnosis can lead to ongoing gut damage, even if symptoms feel manageable.
Over time, untreated coeliac disease has been linked to nutrient deficiencies, weakened bones (osteoporosis), fertility difficulties, and a higher chance of other autoimmune conditions.
This is why sticking closely to a gluten-free diet matters, even when you feel fine. Regular GP check-ins can help monitor how you’re tracking and catch issues early.
Living With Coeliac Disease Day to Day
Adjusting to life with coeliac disease is as much about habits as food. Reading ingredient labels becomes routine, and many Australians look for certified gluten-free logos on packaging.
Eating Out and Travelling
Eating out takes a bit more planning. Calling ahead, asking about cross-contamination, and choosing venues experienced with gluten-free requests all help avoid accidental exposure.
Support and Wellbeing
It’s normal for a diagnosis to feel overwhelming at first, socially and emotionally. Connecting with support networks or trusted resources like Better Health Channel’s guidance on coeliac disease can help you feel less alone while you find your new normal.
When to See a Doctor
If you’ve noticed ongoing digestive symptoms, unexplained fatigue, or a family history of coeliac disease, it’s worth booking a GP visit rather than self-managing with a gluten-free diet first.
Many practices now offer telehealth consultations, a convenient way to start the conversation about symptoms or organise blood tests before an in-person follow-up.
Your GP can guide you through testing, referrals and ongoing care, and connect you with allied health support such as dietitians. Getting a proper diagnosis, rather than guessing, gives you a clearer path forward.
Conclusion
Coeliac disease is a lifelong condition, but with the right diagnosis and a well-managed gluten-free diet, most people go on to live full, healthy lives. The key is getting proper testing rather than self-diagnosing, since an accurate result depends on still eating gluten beforehand.
If any of the symptoms or experiences in this article sound familiar, consider booking a GP appointment to discuss testing and next steps, or use medicine.com.au to find GPs, gastroenterologists and dietitians across Sydney, Melbourne, Brisbane, Perth and Adelaide who can support you through diagnosis and beyond.
FAQs
1. Can coeliac disease develop at any age?
Yes, coeliac disease can appear in childhood or develop later in adulthood, even after years of eating gluten without issues. It’s often uncovered around times of physical stress, such as pregnancy, surgery or illness, so ongoing symptoms at any age are worth checking with a GP.
2. Is coeliac disease the same as a gluten intolerance?
No. Coeliac disease is an autoimmune condition causing measurable damage to the small intestine, while gluten sensitivity doesn’t involve this immune response or intestinal damage. A GP can help work out which one might apply to you through proper testing.
3. Do I need to be gluten-free for life once diagnosed?
Generally, yes. Since there’s no cure or medication for coeliac disease, avoiding gluten completely and permanently is the only way to prevent ongoing gut damage. Occasional lapses can trigger internal inflammation even if you don’t feel unwell straight away.
4. How much does it cost to get tested for coeliac disease in Australia?
Costs vary depending on whether your GP visit is bulk billed and which tests or referrals are involved. Medicare rebates generally apply to eligible tests and consultations, but for current details it’s best to check with Services Australia or your GP’s reception team.
5. Can children be tested for coeliac disease?
Yes, usually starting with a blood test arranged through a GP, similar to adults. If a child shows slowed growth, tummy pain or ongoing fatigue, it’s worth discussing this with your GP or paediatrician rather than adjusting their diet first.